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Sierra School of Gateway (formerly Lexington Life Academy – Gateway)

Designed to nurture your student’s academic, social, and behavioral growth, Sierra School of Gateway provides individualized instruction in smaller, structured classrooms. Our private day school goes beyond what typical classrooms provide, offering an evidence-based approach including a comprehensive range of specialized services and a team of highly-trained educators to help students—and their families—shine.

School Info

Hours
Mon – Fri 8:00 a.m. to 4:00 p.m.

Grades
K-12

  • School Calendar

    Learn more about important dates on our 2025-2026 school year calendar.
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Sierra School of Gateway is where students with academic, emotional, and behavioral needs uncover their potential through individualized learning that goes beyond what most classrooms can offer. In our private day schools, we meet each student where they are.

Smaller class sizes and high-quality, student-centered instruction allow our teachers, therapists, and staff to build strong connections with each student in nurturing, respectful, structured, and positive learning environments. Drawing from a comprehensive range of specialized services, Sierra School educators implement Individualized Education Programs (IEPs) to help each student shine—at school, at home, and in the community.

Our students benefit from SESI’s Integrated Multi-Tiered Systems of Support that:

    • Individually support each student’s academic, behavioral, and emotional needs
    • Prevent barriers to learning in our classroom environments
    • Connect our team with students, staff, families and district partners to ensure the growth of essential skills outside of the classroom setting

Through evidence-based, data-driven instruction that is aligned with your student’s strengths and IEP goals, we meet your student where they are. In other words, we do not tier your student, we tier our supports to uniquely meet your student’s needs.

Strong relationships with our students, families, and school district partners are our highest priority. Together, we shine a bright light on the possibility and untapped potential of every Sierra School student.

Related services offered at this school include counseling services, speech-language therapy, occupational therapy tailored to student needs.

Discover What Sets Sierra School of Gateway (formerly Lexington Life Academy – Gateway) Apart

Our Learning Pathways

  • Spark: Academic and Behavior Support​

    Spark: Academic and Behavior Support​

    Students We Serve

    • Students with strong academic potential and behavioral or emotional challenges
    • Learners impacted by trauma, adversity, or unstable home environments
    • Students navigating school avoidance, anxiety, or juvenile justice involvement
    • Those needing support with regulation, peer relationships, and trust-building
    Spark Student Profiles
  • Spring: Instruction and Life Skills​

    Spring: Instruction and Life Skills​

    Students We Serve

    • Students with learning disabilities, autism, or communication delays
    • Learners preparing for adulthood with support needs in academics and life skills
    • Students who benefit from structured routines, repetition, and visuals
    Spring Student Profiles
  • Bloom: Functional Communication and Daily Living

    Bloom: Functional Communication and Daily Living

    Students We Serve

    • Students with significant cognitive and/or physical impairments who are nonverbal or minimally verbal
    • Learners who need close support with communication, transitions, and self-care
    • Students who thrive in calm, structured, sensory-friendly environments
    Bloom Student Profiles
  • Academic and Behavioral Support

    Academic and Behavioral Support

    We cultivate learning environments where instruction aligns with industry standards and district-specific curriculum requirements and ongoing support encourages prosocial behavior inside and outside the classroom.

  • Optimized Learning Environments​

    Optimized Learning Environments​

    Our special education classrooms are strategically designed to allow students to focus on building critical life and communication skills, while our grade-level classrooms help alternative education students make up lost ground and prepare for a transition back to district classrooms, and ultimately graduation.

  • Successful Transitions

    Successful Transitions

    Whether students are transitioning to a less restrictive environment, progressing toward graduation, or earning a certificate of completion, we help ensure they receive the individualized guidance and support they need to reach their full potential.

  • Tailored Programs

    Tailored Programs

    We carefully assess unique student needs and then craft personalized programs that allow each student to reach their full potential—academically, socially, and emotionally. Progress is continuously monitored, ensuring key milestones are met and celebrated.

Meet Our Team

With deep experience and dedication to helping all students discover their full potential, our leaders provide an unwavering commitment to supporting our teachers, therapists, and other staff while fostering relationships with families and district partners.

  • Jessica Gilmore brings 19 years of experience in education, with a strong background in elementary instruction, reading intervention, and leadership. She holds a bachelor’s degree and a master’s in elementary education with a focus on reading intervention from Northern Arizona University, as well as a master’s in educational leadership from Western Governors University.

    She has served as a director for the past four years, supporting students on the autism spectrum. Jessica’s previous roles include instructional coach, reading interventionist, elementary teacher, and work with emotionally-disabled students. She was an Arizona Teacher of the Year nominee in 2018 and District Teacher of the Year in 2014.

    Jessica is deeply committed to creating a safe, inclusive environment where all students feel seen, heard, and valued. She strives to build meaningful relationships with students and is passionate about preparing them for successful, fulfilling lives beyond school.

What People Are Saying

Across our schools and programs, we’re proud to partner with families, educators, and district leaders to support student success. Hear firsthand how our collaborative approach, experienced staff, and commitment to individualized education are making a lasting impact in classrooms and communities.

  • Communication with partner districts is excellent.

    The school exemplifies strong leadership and a commitment to excellence in education. The administration fosters a supportive and dynamic environment, ensuring that students and staff are well-supported. Their communication with partner districts is excellent, promoting effective collaboration and ensuring that every student’s needs are met. The school’s IEP writing process is thorough, with clear and actionable feedback that directly contributes to student growth. The school consistently delivers strong results, with students achieving their academic and behavioral goals.

    Andrew M. | Vice Principal

Events & Stories

  • A Life-Changing Experience at Sierra School of Gateway

    A Father’s Journey to Find the Best Support When Robert McMahon took on a greater role in managing his daughter…
    June 6, 2025
  • Sierra School of South Mountain’s Trunk-or-Treat Brings Together Halloween Spirit and Community

    Sierra School of South Mountain Hosts Trunk-or-Treat Celebration Sierra School of South Mountain recently hosted its Trunk-or-Treat, an exciting celebration…
    November 13, 2024
  • Students and staff at Lexington Life Academy enjoying prom night

    Sierra School of South Mountain’s Prom 2024

    Sierra School of South Mountain hosted their Prom 2024! Check out the pictures below to see our students enjoying the…
    May 20, 2024

Resources

  • Mel’s Progress at the High Road School of Hartford

    After two and a half years at the High Road School of Hartford, 14-year-old Mel is preparing to transition to a…
  • SPECIALIZED EDUCATION SERVICES, INC. ANNOUNCES 2025 TEACHER AND STAFF OF THE YEAR WINNERS

    Fourth annual awards program celebrates team members’ dedication to students in special and alternative education settings PHILADELPHIA, May 29, 2025…
  • Small Change, Big Impact: How Buehrle Students Turned Pennies into Possibility for Autism Awareness Month

    Every month, students at Buehrle Academy take on a new challenge not for grades, but for good. Students are invited to participate…

FAQ’s

  • If you work at a school district and want to learn more about our school and the referral process, the next step is to contact us directly. We’ll provide detailed information about our programs, answer your questions, and set-up a time for you to come tour our program.

  • We individualize the learning experience by creating a tailored plan for each student based on their unique strengths, needs, and goals. This includes personalized instruction, behavioral support, and regular progress monitoring to ensure growth academically, socially, and emotionally. By collaborating closely with families and school districts, we provide a supportive environment where every student can thrive.

  • The next step is to contact us to schedule a tour of our school. This will give you the opportunity to meet our team, explore our facilities, and learn more about how we can support your child.

  • You can schedule a tour by calling our office or filling out the contact form on our website. Our team will work with you to find a convenient time for your visit.

  • We take a holistic approach to education, integrating academic instruction with behavioral support. Small class sizes allow for personalized attention, and our experienced staff uses evidence-based strategies and high-leverage practices to help students build confidence, self-regulation skills, and positive relationships.

Contact Sierra School of Gateway (formerly Lexington Life Academy – Gateway)